- Shelter
- NW, W, E, SW, S, SE
- Seabed
- mud
- Anchoring
- Allowed
Anchorage off Warren Island, a 70-acre spruce-covered state park island in Penobscot Bay, set roughly half a mile west of Islesboro in Maine.
- Mooring buoys
- Pontoon
Guide
Approach and anchoring
The bottom is mud with good holding. Sheltered from NW round through W and S to SE, but open to the N and NE. The island has a pier and a field of courtesy moorings taken on a first-come basis, the deeper-water moorings reserved for larger boats. Castine town dock lies 9.2 nm to the NE.
Ashore
Warren Island State Park is reached only by boat, with no public ferry. Fresh drinking water is available at the pier and at the centre of the island. A perimeter trail runs through the spruce woods, and the park has twelve campsites and two Adirondack shelters, patrolled by rangers from late May to mid-September.
Key facts
- Type
- Anchorage
- Coordinates
- 44.27568, -68.94174 (44°16.54'N 68°56.50'W)
- Country
- United States
- Shelter
- Sheltered from north-west, west, east, south-west, south, south-east winds
- Seabed
- mud
- Anchoring
- Allowed
- Services
- Mooring buoys, Pontoon
- Boaters' rating
- 4.6/5
- Updated
- July 7, 2026
Getting there
Warren Island lies at 44°16.54'N 68°56.50'W, that is 44.27568, -68.94174 in decimal degrees.
Boaters' reviews
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Write a reviewFrequently asked questions
Which winds is Warren Island sheltered from?
Warren Island is sheltered from north-west, west, east, south-west, south, south-east winds.
Can you anchor at Warren Island?
Yes, anchoring is allowed at Warren Island.
How do boaters rate Warren Island?
Warren Island is rated 4.6/5 by boaters on BoatMap.
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